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Zinc water clamp? #11552
07/15/02 03:20 PM
07/15/02 03:20 PM
R
Redsy  Offline OP
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Copper GEC, copper water line. Are zinc-alloy clamps OK?
The last few times I ordered clamps from the supply house, they sent zinc. I prefer brass.
Anyone?

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Re: Zinc water clamp? #11553
07/15/02 03:44 PM
07/15/02 03:44 PM
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA


Joe Tedesco, NEC Consultant
Re: Zinc water clamp? #11554
07/16/02 06:08 AM
07/16/02 06:08 AM
R
Redsy  Offline OP
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Thanks, Joe.
The page doesn't state conductor material compatibilities, but I spoke to my supplier and got the box for the zinc clamps, which shows use for copper conductors and either copper or galvanized pipe.
I have seen what appeared to be these zinc clamps corrode badly when attached to a copper water line, but my supplier said that aluminum clamps are, or were, available. Maybe aluminum is what I saw

Re: Zinc water clamp? #11555
07/16/02 07:20 AM
07/16/02 07:20 AM
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,890
NY, USA
Redsy,

Our Utility "Red Book" (Guidelines) recommend that zinc-coated, steel type connector be used only on Iron water pipe.

Bill


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